Bids Are invited for Custom Bid For Services - Sitc Of Lightning Protection System On Tank T036 Using Air Terminal Method - Sitc Of 10Mm Dia 1500Mm Long Ss Air Terminal With Aluminium At Base;4.5Mtr High Mast With 1.8Mtrs Of 34Mm Gi Inner Pipe & 3Mtr

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Bids Are invited for Custom Bid For Services - Sitc Of Lightning Protection System On Tank T036 Using Air Terminal Method - Sitc Of 10Mm Dia 1500Mm Long Ss Air Terminal With Aluminium At Base;4.5Mtr High Mast With 1.8Mtrs Of 34Mm Gi Inner Pipe & 3Mtrs Of 48Mm Gi Outer Pipe With Baseplate Suitable For Fixig Clps Air Terminal;Special Fixing Arrangement For Fixing Air Terminal, Tested For 100 Ka Of 10/350Μs Waveform In An Accredited Third Party Laboratory As Per 6.3 & 6.4 Of Iec 62561-1 2017 Protocol. , Sitc Of 8 Mm Dia Solid Aluminium Conductor Tested As Per Iec 62561- 2 Conducted In The Govt. Aggregated Thirty Party Laboratory To Meet The Requirement Of Is/ Iec 62305 , Sitc Of I-Beam Holder Should Be Tested For Conditioning, Ageing Test & Lightning Impulse Current Withstand Test: 100 Ka Of 10/350Μs Waveform In An Accredited Third Party Laboratory As Per 6.3 & 6.4 Of Iec 62561-1 2017 Protocol , Supply & Laying Of 25 X 6 Mm Hot Dip Gi Strip From Al Conductor To The Earth Pit Station And Further The Same Strip Shall Be Used For Interconnecting All The Earth Pits Below Ground Leve Zinc Coating: (Approx :85 Micron Coating) Should Be Tested And Use Exclusively For Lightning Protection ,Earthing System And Ring Equipotential Bonding . Earthing : Supply, Laying /Installing, Connecting And Testing Following Hot Dip Galvanised Wires/ Strips Of Following Sizes For Grounding The System. Wire/ Strip Shall Run On Wall, Column, Roof, Truss, Tie Buried Directly Underground At A Depth Of 600 Mm Including Excavation And Backfilling, Passing Through Installed/ Laid Pipes, Neutral Of The System To Be Embedded In Floor. Installation Shall Include Supply And Installation Of Gi Cl S; Gi Spacers ; Gi Hardware; Gi Pipe Sleeves, Binding Wires, Nuts, Bolts, Washers, Paints, Etc.While Passing Through Wall Or Coming Out Of Floor Chiseling Of Wall/Floor & Making It Good Is Also Included . The Scope Shall Include Connections, End Termination, Jointing, Supply Of Fixing Cl S, Binding Wires, Bolts, Nuts, Washers, Paints, Etc. The Jointing Of Earth Conductors Shall Be By Bolting/Welding/Bracing/ Soldering Be As Per Is:2709. The Jointing Of Strips Shall Be Done By Overlapping And With 2 Sets Of G.I. Nut Bolt & Spring Washer Spaced At 50Mm. The Welded Portion Shall Be Covered With Bitumen Compound. Conductors Required For Gland Earthing Shall Be Included In The Following Items. If Separate Structural Supports, Pipes, The Same Shall Be Covered By Separate Rates. Gi Coating Shall Be 85 Micron.Double Bolting Of Gi Strips Should Be Done With Ss Bolts With Required Nuts/Washers Etc.Welding Of Flats Should Be Neatly Covered With Bitumen Paint25x6 Mm , Sitc Of Conductor Holder -Ss For Fixing 25 X 6 Mm Strip , Sitc Of Earthing Earth Electrode Cu Bonded Steel Rod 14.2Mm Dia X 3000Mm-(250Microns);14.2 / Od Ss Cl Both Side;Eco Safe Carbon Based Backfill Compound - 50 Pounds; Along With Below:-Minimum Depth Of Burial Shall Be 3000 Mm .The Scope Of Work Also Includes Providing Earth Pit Markers Indicating Resistance, Test Date, Next Due Date Etc. As Per Std. Earthpit Boards On Gi Plate Of Size @ 300 X300 Mmx 2Mm Thick With A Gi Hollow Section Stand Of Of 25 Mm Square & Length @ 1M; Grouted In Pcc 1:4:8 At A Depth Of @300 Mm Below The Ground Level And The Top Of Plate Should Be @ 700 Mm Above The Ground Level. , Supervision By Competent Lps Vendor At Least Weekly Twice Till Job Completion And Providing Of Audit Survey Report Of The Lps Air Terminal Method And Completion Certificate Of Compliance Against Mitigation Measure Of Lightning Protection On The Tank As Per Oisd Gdn 180